Moonpool subnautica3/15/2023 Sometimes the term moon pool is used to mean the complete chamber, not just the opening in the bottom and the air–water interface. This kind of submerged chamber uses the same principles as the diving bell, except they are fixed to the seafloor and may be called a wet porch, wet room, or wet bell. Submerged chambers provide dry areas for work and rest without the need to ascend to the surface. In this case, shown in part D of the diagram, there is no dry access between the chamber and the sea surface, and the moon pool is the only entry or exit to the chamber. Very deep moon pools are used in underwater habitats-submerged chambers used by divers engaged in underwater research, exploration, marine salvage, and recreation. NEEMO 13 Crew in the wet porch/moon pool of the Aquarius habitat This was a singular use of a moon pool and also possibly the largest dedicated moon pool constructed to date. The ship's design was broadly inspired by oil drilling ships and included a moon pool measuring 199 by 74 by 65 feet (61 m × 23 m × 20 m), into which the submarine was to be recovered, with the bottom of the moon pool then closed off by two gates that would allow the recovered vessel to be examined under cover and in dry conditions. The Hughes Glomar Explorer was a 50,500 long tons (51,300 t), 619-foot-long (189 m) ship constructed by the United States in the early 1970s for the recovery of a sunken Soviet submarine from the Pacific seabed. Drill pipes need to run vertically through the structure or hull, and the moon pool provides the means to do this. Moon pools originated in the oil drilling industry, which uses them in drilling at sea or in lakes, to pass drilling equipment into the water from a platform or drillship.
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